CN102664952A - Method for managing and monitoring embedded equipment cluster - Google Patents

Method for managing and monitoring embedded equipment cluster Download PDF

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Publication number
CN102664952A
CN102664952A CN2012101250170A CN201210125017A CN102664952A CN 102664952 A CN102664952 A CN 102664952A CN 2012101250170 A CN2012101250170 A CN 2012101250170A CN 201210125017 A CN201210125017 A CN 201210125017A CN 102664952 A CN102664952 A CN 102664952A
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service
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server
web
browser
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CN102664952B (en
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赵琦
王罡
冯文全
朱楠
张猛
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Beihang University
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Beihang University
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Abstract

Along with rapid development of a network information technology, a Web technology is applied in the control field more and more, so that a client can access a server only by connecting the Ethernet and acquiring an access authority to look up field relevant information and control the operation of the server. An embedded system has the advantages of high instantaneity, high reliability, small size and the like; and the Web technology and the embedded system are combined, so that respective advantages of the Web technology and the embedded system are brought into play, and the development of remote data monitoring is facilitated. The invention discloses a method for managing and monitoring an embedded equipment cluster. The method comprises five steps. Control management and monitoring of single embedded equipment and an embedded equipment cluster are completed through a browser. The user accesses the Ethernet through the client to obtain a user permission for accessing the server through the browser, and a business logic is mainly realized at a server end, so that the computer load of the client is simplified greatly, and the total cost of the user is lowered.

Description

A kind of method to embedded device cluster management and monitoring
Technical field
The present invention relates to a kind of generalization, the high performance solution of using based on the embedded device of B/S structure, relate in particular to a kind of method embedded device cluster management and monitoring.It can accomplish control and management and monitoring to single embedded device and embedded device cluster efficiently and in real time through browser.This invention belongs to Embedded Application development technique field.
Background technology
Along with the develop rapidly of the network information technology, the increasing control field that is used in of Web (the Internet) technology, the Web development technique also can be divided into two big types of client technology and service end technology substantially.Embedded system technology has become one of the most popular technology at present, and advantages such as embedded system is little with system kernel, system simplifies, high real-time, high reliability, multi-task operation system have all obtained extensive use in every field.
Along with the web technical application is ripe gradually, the user can connect Ethernet through client, and gets final product access server when obtaining user right.Can accomplish the task of expectation through the software that specific function is installed, it have low in energy consumption, volume is little, performance is high, with low cost, portability, be easy to characteristics such as deployment.But strengthened client computer load to a certain extent, strengthened the cost and the workload of system maintenance and upgrading, strengthened user's overall cost.
If with appropriate mode with Web technology and the embedded system enforcement tele-control system that combines; User's working interface just can be realized through browser; Few partial service logic realizes at front end under this structure; The main business logic realizes at server end; Promptly can carry out required operation with regard to any special software need not be installed like this, can satisfy the user and only use browser can accomplish management control and monitoring efficiently and in real time embedded device.
Summary of the invention
A kind of method to embedded device cluster management and monitoring of the present invention, it accomplishes control and management and monitoring to single embedded device and embedded device cluster through browser.
Technical scheme
The technical problem that (one) will solve
Traditional management for embedded device and embedded cluster device is normally accomplished by client with control; The user connects Ethernet through client; And obtain user right and visit server; Accomplish set task through various software is installed, manage control embedded device and embedded cluster device.The invention provides a kind of method of using browser to manage and control embedded device and embedded cluster device, can reduce client computer load through the method, greatly degree reduces the cost of system upgrade and maintenance.
(2) concrete technical scheme
A kind of method of the present invention to embedded device cluster management and monitoring; It is made up of hardware and software two parts; Hardware components is made up of concrete embedded device and server; To tackle different development requirements, software section is used by DTEA (implementation framework of a kind of distributed testing environment of invention) and concrete Web and is formed.
The present invention realizes the backend services logic by DTEA, realizes communicating by letter of DTEA and Java through the ICE middleware, and service logic on server and the embedded device is separated realize.Relation between them is that the server communication termination is received data through service logic on the ICE middleware connection DTEA realization embedded device, and then sends data through ICE middleware Connection Service device communication ends.
As shown in Figure 1; DTEA can run on the embedded device; The Java client of DTEA and concrete WEB use and may operate on embedded device or the server; Different according to demand, the Java client of DTEA and concrete WEB use and can select on embedded or move on the server, if treating capacity not quite can make DTEA and its client also have the WEB application all to operate on the identical embedded device.The user operates through browser; Request is connected in the WEB application; Through the long-range or local connection of DTEAJava client DTEA, on DTEA, can manage and accomplish the corresponding service logic service is provided different service objects, be back to DTEA Java client again; Use through WEB at last and turn back to response user request on the browser, explanation technical scheme of the present invention below.
One, realizes the backend services logic by DTEA
(1) DTEA architecture
Distributed testing Environment Architecture (DTEA:Distributed Test Environment Architecture) is a kind of implementation framework of distributed testing environment.The target of DTEA is that the various functional modules in the software environment are carried out the system integration with a kind of mode of loose coupling, thus develop and field software application system fast and effectively.
The architecture of DTEA system is as shown in Figure 2, and the DTEA system is made up of a series of background server and a series of front-end application usually.Background server operation DTEA service, the function that is provided comprises Hardware I/O service, all purpose instrument interface service, the computed in software that does not need operating user interface, analysis, stores service etc.Front-end application is usually as the client of DTEA, and the various services that the DTEA server is provided come the request of process user, to obtain the data to user's transmission.Also can communicate through using remote object to quote the mode identical very easily between the service module of DTEA with client.
The service module of DTEA uses standard set interface and the external information interaction of carrying out, so each service module all has specifically interface message clearly, is convenient to the tissue of software development work, and the while can be realized reusing of software module.
(2) the DTEA software frame is realized
The DTEA software frame has defined a kind of OO remote server integrated approach.Server end by a service software with can form through the remote service library of object of configuration file loading, as shown in Figure 3.
Service software is as a general remote service object, the service object that decision will load according to configuration file when starting, be responsible for simultaneously these service objects instance establishment and close, and communicate by letter with the service object through unified interface.Service software is responsible for accomplishing all telecommunications with client, the service object only need pay close attention to the business that will realize.Service in that the operation service object is provided is just the same as being called in this locality.
The DTEA software frame is disposed required service through platform software is configured realization mainly by fixing platform software be that the service module that various application specific are developed is formed.
(3) service object storehouse design
DTEA remote service object exists with the form of dynamic link library.On Windows, be dll file, and on Linux, be so file (SB).
A plurality of service objects can be derived in a service object storehouse.And in the typonym of service object in server, comprise the typonym of object and the title of library of object.Service software can find the type in corresponding service object storehouse and the storehouse according to the title of type.
The exploitation in service object storehouse must meet a group interface of DTEA software frame definition, and service software just maybe be dynamic according to the described COS that will load of configuration file like this, comes to load automatically library of object and create Service Instance.
(4) service object
The service object is the software object that service externally is provided with the standard mode of DTEA definition.Service object's function realizes being kept in the service object storehouse, if develop with C++, promptly is a class that realizes in the service object storehouse.The service software service object that which type decision will create according to configuration file when operation, and search service library of object find the type and create instance.
The DTEA software frame has been stipulated service object's external presentation behavior to service object's realization, and every kind of service object can provide the interface that can supply client-access with whole or some behavior wherein.
Two, realize communicating by letter of Java and DTEA through the ICE middleware
(1) realizes that through the ICE middleware C++ communicates by letter with Java
As shown in Figure 4, the ICE middleware is a kind of object-oriented middleware platform.ICE (object-oriented middleware) provides instrument, API and storehouse to support for making up OO client-server application.ICE uses and is adapted at using in the isomerous environment; Client and server can be used the different programming language; May operate on different operating systems and the machine architecture; And can use the multiple network technology to communicate, regardless of deployed environment, the source code of these application all is transplantable.
(2) the Java client of DTEA realizes
DTEA has adopted a kind of service-oriented method for designing, makes loose couplings between each service logic, clear in structure.The service object of DTEA is based on the C++ realization, in order to realize the service among the Web application call DTEA, has rewritten the client of DTEA with Java based on the principle of ICE.And Java having in Web exploitation is cross-platform, advantages of wide application range.Make web application can call the service among the DTEA through the ICE middleware based on Java.
Three, the separating of service logic on server and the embedded device
Because the present invention realized separating of service logic and Web server, so Web server can be installed on the embedded device, also can independent installation to the better computer of performance.
The developer, based on the corresponding service of DTEA framework exploitation and is deployed on the embedded device at first according to the detailed programs needs.Exploitation is used based on the Web of Java, and Web uses the rear end through the communication for service among ICE middleware and the DTEA, and the Web application front end is realized the efficient control to the backend services logic through asynchronous communication (AJAX).If exploitation is based on the application of single embedded device, then the Web application deployment to embedded device, if exploitation based on the application of embedded cluster, then the Web application deployment to server.
Four, communicating by letter between Web server and browser
When weblication that one of browser access is built by tomcat, the file that tomcat can become corresponding file conversion browser to show; When browser access be servlet and html the time, tomcat will be directly passed to browser; Browser access be a jsp file time, tomcat can be compiled into a servlet to jsp file, servlet sends corresponding data to browser again.Can be compiled into servlet visit later on when having only visit for the first time and just directly call corresponding servlet.
Servlet is the java application that is positioned at the inner server end of Web server; Different with traditional java application from the order line startup; Servlet is loaded by Web server, and this Web server must comprise the Java Virtual Machine of supporting Servlet.
The request of client is depended in the dynamic generation of response contents usually, and server can return to client with response contents.Client sends a request to server end, and server is sent to Servlet with solicited message, and Servlet generates response contents and it is passed to Server.
A kind of method of the present invention to embedded device cluster management and monitoring, the concrete performing step of this method is following:
Step 1
To carry out object oriented analysis earlier before bottom is used writing, draw which method and should come out and visit for java applet.At first write the slice program after the analysis, generate C++ program and java applet automatically with corresponding ICE instrument respectively then, bottom application module is afterwards accomplished with the ICE middleware through these programs with the Web module and is communicated by letter.
Step 2
C++ program by slice generates has only abstract class; Method does not wherein realize; The concrete class of implementation method will be inherited the abstract class that is generated by slice in the exploitation in the bottom of embedded device is used, so just can accomplish communicating by letter of Java and C++ by the identification of ICE middleware.
Step 3
Java Web uses and will operate in the Servlet container, and needs the support of standard java runtime environment.So JRE should be installed on embedded device earlier, and then be transplanted to the Web application on the embedded device.Want to realize the communication of Java Web application module with embedded bottom application module, the corresponding service logic module will realize that also it just can obtain quoting of C++ object like this by the interface of slice generation during Web used.
Step 4
When at the browser access embedded device, solicited message arrives Web server through the http protocol transmission, and transfers to Java Web application processes, and returns to browser to result.The present invention adopts the AJAX technology, makes whole only need of webpage send once, and only needs to send useful information later on, thereby improve the performance of Web program, alleviates the burden of server and bandwidth.
Step 5
The final realization called the Arm method with the C++ object from the front end browser.At first carry out asynchronous communication through AJAX and Web server; In Web server, generate the content that will be shown to browser then by Java; Java calls the method for C++ object among the Arm through ICE when generating displaying contents, thereby realizes efficiently controlling Arm through browser.
A kind of method of the present invention to embedded device cluster management and monitoring, it is a kind of generalization, the high performance solution of using based on the embedded device of B/S structure, has realized that its major advantage is following from front end browser control embedded device:
(1) the present invention is a kind of generalization, high performance embedded device solution.It realizes can satisfying management and the monitoring of efficient, the real-time completion of user to embedded device and cluster through the browser remotely controlled built-in devices.
(2) the present invention has alleviated the load of client computer through the management of browser realization embedded device, has greatly reduced the cost and the workload of system maintenance and upgrading.
Description of drawings
Fig. 1 is the overall system architectural schematic
Fig. 2 is the DTEA architectural schematic
Fig. 3 is the server software sketch map
Fig. 4 is the ICE fundamental diagram
Fig. 5 is a FB(flow block) of the present invention
Embodiment
A kind of method of the present invention to embedded device cluster management and monitoring; It is a kind of generalization, the high performance solution of using based on the embedded device of B/S structure; It is made up of hardware and software two parts; Hardware components is made up of concrete embedded device and server, and to tackle different development requirements, software section is used by DTEA (implementation framework of a kind of distributed testing environment of invention) and concrete Web and formed.
The present invention realizes the backend services logic by DTEA, realizes communicating by letter of DTEA and Java through the ICE middleware, and service logic on server and the embedded device is separated realize.Relation between them is that the server communication termination is received data through service logic on the ICE middleware connection DTEA realization embedded device, and then sends data through ICE middleware Connection Service device communication ends
As shown in Figure 1; DTEA can run on the embedded device; The Java client of DTEA and concrete WEB use and may operate on embedded device or the server; Different according to demand, the Java client of DTEA and concrete WEB use and can select on embedded or move on the server, if treating capacity not quite can make DTEA and its client also have the WEB application all to operate on the identical embedded device.The user operates through browser; Request is connected in the WEB application; Through the long-range or local connection of DTEA Java client DTEA, on DTEA, can manage and accomplish the corresponding service logic service is provided different service objects, be back to DTEA Java client again; Use through WEB at last and turn back to response user request on the browser, explanation technical scheme of the present invention below.
One, realizes the backend services logic by DTEA
(1) DTEA architecture
Distributed testing Environment Architecture (DTEA:Distributed Test Environment Architecture) is a kind of implementation framework of distributed testing environment.The target of DTEA is that the various functional modules in the software environment are carried out the system integration with a kind of mode of loose coupling, thus develop and field software application system fast and effectively.
The DTEA system is made up of a series of background server and a series of front-end application usually.Background server operation DTEA service, the function that is provided comprises Hardware I/O service, all purpose instrument interface service, the computed in software that does not need operating user interface, analysis, stores service etc.Front-end application is usually as the client of DTEA, and the various services that the DTEA server is provided come the request of process user, to obtain the data to user's transmission.DTEA also can communicate through using remote object to quote the mode identical with client between the service module except the communication of supporting the DTEA server and client side very easily.
The architecture of DTEA system is as shown in Figure 2, and Function Servers (function server) is the base unit that service is provided in the system.Function Server designs according to the thought of service-oriented (SOA).Client can be obtained the tabulation of certain Function all service that Server provides and the method for using of special services through the standard method of definition.The method that service is used all has unified form, and Function Server promptly is the function supplier that can dispose voluntarily like this.Because the service that Function Server externally provides all has unified method for using, client (i.e. the user of service) can certain general mode realize.Promptly need not come to write specially specific client according to specific server capability; When having increased new Function Server in function increase, variation and the system in the server, client can use server voluntarily configuration feature information follow the variation of server.
The service module of DTEA uses standard set interface and the external information interaction of carrying out, so each service module all has specifically interface message clearly, is convenient to the tissue of software development work, and the while can be realized reusing of software module.
(2) the DTEA software frame is realized
The DTEA software frame has defined a kind of OO remote server integrated approach.Server end by a service software with can form through the remote service library of object of configuration file loading, as shown in Figure 3.
Service software is as a general remote service object, the service object that decision will load according to configuration file when starting, be responsible for simultaneously these service objects instance establishment and close, and communicate by letter with the service object through unified interface.Service software is responsible for accomplishing all telecommunications with client, the service object only need pay close attention to the business that will realize.Service in that the operation service object is provided is just the same as being called in this locality.
The DTEA software frame is disposed required service through platform software is configured realization mainly by fixing platform software be that the service module that various application specific are developed is formed.
(3) service object storehouse design
DTEA remote service object exists with the form of dynamic link library.On Windows, be dll file, and on Linux, be so file (SB).
A plurality of service objects can be derived in a service object storehouse.And in the typonym of service object in server, comprise the typonym of object and the title of library of object.For example: dtsSampleService.DTEADemo.The service object of this type, expression is by the service object of the dtsSampleService type of service object storehouse DTEADemo derivation.Service software can find the type in corresponding service object storehouse and the storehouse according to the title of type.
The exploitation in service object storehouse must meet a group interface of DTEA software frame definition, and service software just maybe be dynamic according to the described COS that will load of configuration file like this, comes to load automatically library of object and create Service Instance.
Usually can one group of remote service that function service is relevant in same storehouse, realize.Because the object type in the same storehouse obviously can be coupled more closely.And the object between the different storehouses will be realized mutual communication, and intelligence is used the standard method of DTEA definition.
(4) service object
The service object is the software object that service externally is provided with the standard mode of DTEA definition.Service object's function realizes being kept in the service object storehouse, if develop with C++, promptly is a class that realizes in the service object storehouse.The service software service object that which type decision will create according to configuration file when operation, and search service library of object find the type and create instance.
The DTEA software frame has been stipulated service object's external presentation behavior to service object's realization, and every kind of service object can provide the interface that can supply client-access with whole or some behavior wherein.
Two, realize communicating by letter of Java and DTEA through the ICE middleware
(1) realizes that through the ICE middleware C++ communicates by letter with Java
As shown in Figure 4, the ICE middleware is a kind of object-oriented middleware platform.ICE provides instrument, API and storehouse to support for making up OO client-server application.ICE uses and is adapted at using in the isomerous environment; Client and server can be used the different programming language; May operate on different operating systems and the machine architecture; And can use the multiple network technology to communicate, regardless of deployed environment, the source code of these application all is transplantable.
The process of communicating by letter with Java through ICE middleware realization C++ is following:
1. at first use slice language good " interface ".
2. after interface was finished, nature will go to realize it, at this moment can select any host language to remove to realize this interface.The present invention adopts C Plus Plus.Behind corresponding compiler generation auxiliary code, the developer carries out the exploitation of service logic on this basis.Realize a square tube Chang Zuowei service end of interface, the API issuing service that ICE capable of using provides.
3. as called side, can select any host language equally, the present invention adopts Java language.
4. after the service end operation, client just can be called the interface that it provides.ICE has shielded the communication details of bottom.
(2) the Java client of DTEA realizes
DTEA has adopted a kind of service-oriented method for designing, makes loose couplings between each service logic, clear in structure.The service object of DTEA is based on the C++ realization, in order to realize the service among the Web application call DTEA, has rewritten the client of DTEA with Java based on the principle of ICE.And Java having in Web exploitation is cross-platform, advantages of wide application range.Make web application can call the service among the DTEA through the ICE middleware based on Java.
Three, the separating of service logic on server and the embedded device
Because the present invention realized separating of service logic and Web server, so Web server can be installed on the embedded device, also can independent installation to the better computer of performance.
The present invention is a kind of solution of embedded device cluster management, and the developer, based on the corresponding service of DTEA framework exploitation and is deployed on the embedded device at first according to the detailed programs needs.Exploitation is used based on the Web of Java, and Web uses the rear end through the communication for service among ICE middleware and the DTEA, and the Web application front end is realized the efficient control to the backend services logic through asynchronous communication (AJAX).If exploitation is based on the application of single embedded device, then the Web application deployment to embedded device, if exploitation based on the application of embedded cluster, then the Web application deployment to server.
Four, communicating by letter between Web server and browser
When weblication that one of browser access is built by tomcat, the file that tomcat can become corresponding file conversion browser to show; When browser access be servlet and html the time, tomcat will be directly passed to browser; Browser access be a jsp file time, tomcat can be compiled into a servlet to jsp file, servlet sends corresponding data to browser again.Can be compiled into servlet visit later on when having only visit for the first time and just directly call corresponding servlet.
Servlet is the java application that is positioned at the inner server end of Web server; Different with traditional java application from the order line startup; Servlet is loaded by Web server, and this Web server must comprise the Java Virtual Machine of supporting Servlet.
The request of client is depended in the dynamic generation of response contents usually, and server can return to client with response contents.Client sends a request to server end, and server is sent to Servlet with solicited message, and Servlet generates response contents and it is passed to Server.
See Fig. 5, a kind of method of the present invention to embedded device cluster management and monitoring, its concrete performing step is following:
Step 1
To carry out object oriented analysis earlier before bottom is used writing, draw which method and should come out and visit for java applet.At first write the slice program after the analysis, generate C++ program and java applet automatically with corresponding ICE instrument respectively then, bottom application module is afterwards accomplished with the ICE middleware through these programs with the Web module and is communicated by letter.
Step 2
C++ program by slice generates has only abstract class; Method does not wherein realize; The concrete class of implementation method will be inherited the abstract class that is generated by slice in the exploitation in the bottom of embedded device is used, so just can accomplish communicating by letter of Java and C++ by the identification of ICE middleware.
Step 3
Java Web uses and will operate in the Servlet container, and needs the support of standard java runtime environment.So JRE should be installed on embedded device earlier, and then be transplanted to the Web application on the embedded device.Want to realize the communication of Java Web application module with embedded bottom application module, the corresponding service logic module will realize that also it just can obtain quoting of C++ object like this by the interface of slice generation during Web used.
Step 4
When at the browser access embedded device, solicited message arrives Web server through the http protocol transmission, and transfers to Java Web application processes, and returns to browser to result.The present invention adopts the AJAX technology, makes whole only need of webpage send once, and only needs to send useful information later on, thereby improve the performance of Web program, alleviates the burden of server and bandwidth.
Step 5
The final realization called the Arm method with the C++ object from the front end browser.At first carry out asynchronous communication through AJAX and Web server; In Web server, generate the content that will be shown to browser then by Java; Java calls the method for C++ object among the Arm through ICE when generating displaying contents, thereby realizes efficiently controlling Arm through browser.
With Arm-linux is example
Because Java web application and ICE communication engines need the java runtime environment of standard, so the present invention has selected JAVA SE FOR EMBEDDED version.The step that is installed to this JRE and tomcat on the Arm-linux is following:
Step 1 obtains installing file < package name for jre >, and decompression tar-zxvf < package name for jre >
Step 2 obtains this catalogue of ejre1.6.0_xx under current directory, be made as < current-directory >/ejre1.6.0_xx the value of environmental variance < JAVA_HOME >.
JAVA_HOME=<current-directory>/ejre1.6.0_xx
Add < JAVA_HOME >/bin among the step 3 environmental variance PATH so that system correctly searches out Java order PATH=$PATH: $ JAVA_HOME/bin
After step 4 obtains tomcat installation file, decompression tar-zxvf < package name for tomcat >
In the apache-tomcat-6.0.xx file, get into the bin catalogue and open tomcat./startup.sh under step 5 current directory
Visit has operated in the tomcat in embedded in browser, in browser, imports http: // 192.168.110.11:8080
(address of supposing embedded device here is 192.168.110.11)
Just can be placed into the web of exploitation application under the pache-tomcat-6.0.xx/webapps through this operation, browser just can be visited the web that operates on the embedded device and used.

Claims (1)

1. method to embedded device cluster management and monitoring, it is characterized in that: the concrete performing step of this method is following:
Step 1
Before writing the bottom application, to carry out object oriented analysis earlier; Drawing which method should come out and visit for java applet; At first write the slice program after the analysis; Automatically generate C++ program and java applet with corresponding ICE instrument respectively then, bottom application module is afterwards accomplished with the ICE middleware through these programs with the Web module and is communicated by letter;
Step 2
C++ program by slice generates has only abstract class; Method does not wherein realize; The concrete class of implementation method will be inherited the abstract class that is generated by slice in the exploitation in the bottom of embedded device is used, could accomplish communicating by letter of Java and C++ by the identification of ICE middleware like this;
Step 3
Java Web uses and will operate in the Servlet container, and needs the support of standard java runtime environment; So JRE should be installed on embedded device earlier, and then be transplanted to the Web application on the embedded device; Want to realize the communication of Java Web application module with embedded bottom application module, the corresponding service logic module will realize that also it just can obtain quoting of C++ object like this by the interface of slice generation during Web used;
Step 4
When at the browser access embedded device, solicited message arrives Web server through the http protocol transmission, and transfers to the JavaWeb application processes, and returns to browser to result; Here adopt the AJAX technology, make whole only need of webpage send once, and only need to send useful information later on, thereby improve the performance of Web program, alleviate the burden of server and bandwidth;
Step 5
The final realization called the Arm method with the C++ object from the front end browser; At first carry out asynchronous communication through AJAX and Web server; In Web server, generate the content that will be shown to browser then by Java; Java calls the method for C++ object among the Arm through ICE when generating displaying contents, thereby realizes efficiently controlling Arm through browser.
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CN106790084A (en) * 2016-12-22 2017-05-31 中国科学院电子学研究所苏州研究院 A kind of heterogeneous resource integrated framework and its integrated approach based on ICE middlewares
CN107273108A (en) * 2016-04-01 2017-10-20 西克股份公司 Display and operation device and the method by showing and operation device operates field apparatus
CN108137124A (en) * 2015-08-26 2018-06-08 博洛斯股份公司 Control device, computer and communication system
CN108459849A (en) * 2017-02-22 2018-08-28 本钢板材股份有限公司 Low configuration PC terminals execute the design method of program on long-range high-performance server
CN112711409A (en) * 2019-10-25 2021-04-27 杭州海康威视数字技术股份有限公司 Application program development and operation method and system and intelligent analysis equipment

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